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(No Model.)

P. MURRAY, Jr.

HYDRAULIC MOTOR.

Patented Feb. 15,1887.

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UNITED STATES PATENT OFFICE.

PETER MURRAY, JR, OF NEWARK, NEWV JERSEY, ASSIGNOR TO THE BAGKUS MANUFACTURING COMPANY, OF SAME PLACE.

HYDRAULIC MOTOR.

SPECIFICATION forming part of Letters Patent No. 357,732, dated February 15, 1887 Application filed May 12, 1886. Serial No. 201,936. (No model.)

To aZZ whom, it may concern:

Be it known that 1, PETER MURRAY, J r., of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Hydraulic Motors, of

which the following is a specification.

This invention relates to an improved hydraulic motor for working pumps, organ-bellows, and for other purposes; and the invention consists of a hydraulic motor composed of a main cylinder having water inlet and outlet ports, a reciprocating motor-piston, a reciprocating piston-valve of novel construction guided in a valve-chest alongside of the main 1 5 cylinder, and an oscillating valve located in a valve-chest above the piston-valve and operated by an adjustable lever mechanism connecting the spindle of the oscillating valve with therod of the motor-piston, and supply and exhaust channels for the chestsofthe oscillating valve and piston-valve, as will appear more fully hereinafter, and finally be pointed out in the claims.

In the accompanying drawings, Figurel rep- 2 5 resents a side elevation of my improved hydraulic motor arranged in a horizontal position for workingapump. Figs. 2 and 8 are, respectively, a side and an end elevation of the motor arranged in upright position for working 0 the bellows of an organ. Fig. 4 is a vertical longitudinal section of the hydraulic motor. Figs. 5 and 6 are vertical transverse sections of the same, respectively, on line at x and y y, Fig. 4.

5 Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents the main cylinder of my improved hydraulic m0- tor, which is supported on asuitable bed-plate in a horizontal or vertical position, according to the purpose for which the same is to be em ployed. The cylinder Ais provided at one side with a valve-face, A, having a central larger outlet-port, c, and two smaller ports,

5 a a at each side of the said central outletport, a, as shown in Fig. 4:. The ports a to serve always as discharge-ports, while the ports a serve alternately as inlet and discharge ports. The ports a a connect by channels a with the ends of the main cyland motor-piston.

inder A, which is closed at the ends by heads A one of which is provided with the usual stuffing-box for the reciprocating pistonrod B of the piston 13. A cylindrical valve-chest, G, and piston-valve D are arranged alongside of the face A of the main cylinder, the piston-valve being provided with three pairs of disks, 1), b, and b, the middle pair being wider than the intermediate pair of disks, and arranged in such a manner that water is admit- 6o ted through one port, M, at one side of the outlet-port only, while both ports at the other side of the outlet-port a are opened to facilitate the discharge. The inner pair of disks, b, is providedwith openings, through which 6 the water can pass to the outlet-port when the cylinder is discharging, as shown in Fig. 4. The outer disks, b are packed to prevent the water from passing from the spaces between the disks b and b to the spaces between the disks 1) and the heads of the valve-chest C. In this manner the area of discharge is twice as large as the area of admission for the water, whereby the easy working of the motor without pounding is produced, and the full power of the same preserved.

On the valve-chest O is arranged transversely to the same a cylindrical chest, E, within which is placed an oscillating valve,E,which is actuated by the pistonrod B and an intermediate lever mechanism, 01 d d, as shown in Figs. 1 and 2. The lever d is connected by a clamp screw, 61*, with an arc-shaped slot, 61 of the lever (1 which arc-shaped slot is concentric to the pivot connecting theleversdandd. This adjustable connection of the levers d d serves to regulate the travel of the oscillating valve E and govern the motions of the piston-valve The lever d is conneeted to the spindle of the valve E and provided with a handle, d by which the valve can be oscillated, so as to free the piston-valve preparatorytostartingthelatter. Theoscillating valve E is provided with two inlet-ports, e, and an intermediate outlet-port, c, which com- 9 5 niunicate alternately with the ports 6 and channels e and with a central outlctchannel, e,

in the head of the valve-chest E, as shown in in Fig. 4.

\Vhen water is supplied to the valvechests 10o and E and the piston-valve started by hand, the water is alternately conducted by the oscillating valve E to opposite ends of the pistonvalve D, and the latter thereby reciprocated,

so as to alternately supply water to one end of the main cylinder or to the other, and produce thereby the reciprocating motion of the piston B,which again keeps up the oscillating motion of the valve E by the connecting lever mechanism d cl (P.

The water for driving the motor is supplied by the inletpipe F,-which communicates by an annular channel, F, with longitudinal channels f, extending at both sides of the valvechcst O. The side channels,f, communicate by ports 12 with the spaces between the disks 1) and I) of the piston-valve and with one of the ports, a. One of the side channels,f, communicates by a channel, f, with the channels e in the head of the valve-chest 'E. The outlet-channels a and 0* of the cylinder A and valve-chest E communicate with an annular outlet-channel, F, that is extended around both sides of the cylinder A, and connected below the cylinder to the outlet-pipe F". The opposite ends of the main cylinder are connected by openings and pipes with vertical storage-cylinders G,within which are arranged spring-actuated pistons, that are acted upon by spiral springs g,interposed between the tops ofthe storagecylinders G and adjusting screws supported on yokes of the same, as shown in Figs. 1 and 2.

The pistons of the storage-cylinders G are alternately acted upon by the water supplied to the ends of the cylinder A, so that the same pressure is exerted on the pistons of the storage-cylinders that is exerted on the main piston, whereby at each stroke of the m otor-piston a certain amount of power is stored up in the cylinders G, which power is given out and exerted on the motor-piston, so as to move the same over the center of the cylinder A and cause it to complete its stroke after the pistonvalve D has been shifted.

The storage-cylinders form no part of this application, as the same are fully described and claimed in another application for a hydraulic motor filed November 30, 1885, Serial No. 184,233, to which reference is made.

' Where the pressure of water is higher the increased speed of the motor-piston will necessitate a quicker return of the piston-valve, in order to prevent the motorpiston from traveling too far and striking the head of the main cylinder. As the pistonvalve is at rest when the piston is in motion, it necessarily follows that the motor-piston will travel agreater distance under a high pressure than a low pressure before the piston-valve would get into action; hence an earlier opening of the oscillating Valve is required, so as to reverse the piston-valve and shorten the stroke of the motor-piston by cutting off the supply. This is accomplished by adjusting the travel of the oscillating valve according to the water-press ure, ahigh pressure requiring a decrease, and alower pressure an increase, in the extent of travel of the valve.

Having thus described myinvention, I claim as new and desire to secure by Letters Patent- 1. The combination of a main cylinder having a central outlet-port and two smaller ports at each side of the outlet-port, a motor-piston, a valve chest, a reciprocating pistonvalve composed of three pairs of disksa pair of inner perforated disks, a pair of intermediate separating disks, and a pair of packed outer disksa valve-chest and oscillating valve communicating with the valvechest of the piston-valve, supply-channels eX- tending at both sides of the chest of the piston-valve and communicating by ports with the spaces between the outer andintermediate disks, a supply-channel leading to the chest of the oscillating valve, channels connecting the chests of the oscillating and piston valves, and outlet-channels leading from the chest of the piston-valve and main cylinder to the outlet-pipe, substantially as set forth.

2. The combination of a main cylinder having a central outlet-port and two smaller ports at each side of said outlet-port, a motor-piston, a valve-chest, a reciprocating piston-valve composed of three pairs of disksan inner pair of perforated disks, an intermediate pair of separating disks, and an outer pair of packed diskssupply-channels extending at both sides of said valve chest and communicating by ports with the spaces between the outer and intermediate disks and valve-chest, an oscillating valve communicating with the valvechest of the piston-valve, a supply-channel leading to the chest of the oscillating valve, channels connecting the chests of the oscillating and piston valves, outlet-channels leading from the chest of the piston-valve and main cylinder to the outlet-pipe, and a lever mechanism connecting the piston-rod of the motorpiston with the spindle of the oscillating valve, said lever mechanism being adjustable relatively to the spindle of the oscillating valve, so as to regulate the stroke of the motor-piston according to different water-pressures, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

PETER MURRAY, JR.

YVitnesses:

PAUL GoEPEL, SIDNEY MANN. 

